使用PCI9054芯片，實(shí)現(xiàn)Block DMA傳輸方式
上傳時(shí)間： 2013-11-25
上傳用戶：cmc_68289287
在ext2文件系統(tǒng)中，文件由inode（包含有文件的所有信息）進(jìn)行唯一標(biāo)識(shí)。一個(gè)文件可能對(duì)應(yīng)多個(gè)文件名，只有在所有文件名都被刪除后，該文件才會(huì)被刪除。此外，同一文件在磁盤中存放和被打開時(shí)所對(duì)應(yīng)的inode是不同的，并由內(nèi)核負(fù)責(zé)同步。 ext2 文件卷中的數(shù)據(jù)結(jié)構(gòu)主要包括：superBlock 塊、組描述符、inode等。 ext2文件系統(tǒng)采用三級(jí)間接塊來(lái)存儲(chǔ)數(shù)據(jù)塊指針，并以塊（Block，默認(rèn)為1KB）為單位分配空間。其磁盤分配策略是盡可能將邏輯相鄰的文件分配到磁盤上物理相鄰的塊中，并盡可能將碎片分配給盡量少的文件，以從全局上提高性能。ext2文件系統(tǒng)將同一目錄下的文件（包括目錄）盡可能的放在同一個(gè)塊組中，但目錄則分布在各個(gè)塊組中以實(shí)現(xiàn)負(fù)載均衡。在擴(kuò)展文件時(shí)，會(huì)盡量一次性擴(kuò)展8個(gè)連續(xù)塊給文件。 ext2系統(tǒng)中對(duì)各個(gè)結(jié)構(gòu)的定義都包含在源代碼的include/linux/ext2_fs.h文件中。
標(biāo)簽： ext2 文件系統(tǒng)
上傳時(shí)間： 2016-07-06
上傳用戶：yoleeson
ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in Block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white
標(biāo)簽： transmission simulator Channel inputs
上傳時(shí)間： 2016-07-22
上傳用戶：kelimu
This project allows you to learn communication systems in greater depth. It contains the Simulink files (*.mdl) which are Block design files of various communication systems such as AM, DSB-SC, FM, PLL, Data Acquisition, Digital Data Transmission, PCM and Delta Modulation. The idea here is to implement experiments of a traditional communication lab using Simulink. Most of the Block diagrams are self explanatory. More information on the systems and their implementation can be found in the word documents included in the lab directories
標(biāo)簽： communication Simulink contains project
上傳時(shí)間： 2013-12-09
上傳用戶：lz4v4
Sofia SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. It can be used as a building Block for SIP client software for uses such as VoIP, IM, and many other real-time and person-to-person communication services. The primary target platform for Sofia SIP is GNU/Linux. Sofia SIP is based on a SIP stack developed at the Nokia Research Center. Sofia SIP is licensed under the LGPL.
標(biāo)簽： specification open-source User-Agent SIP
上傳時(shí)間： 2016-08-25
上傳用戶：asasasas
Name Function --- --- --- --- --- --- Check_SST_39VF160 Check manufacturer and device ID CFI_Query CFI Query Entry/Exit command sequence Erase_Entire_Chip Erase the contents of the entire chip Erase_One_Sector Erase a sector of 2048 word Erase_One_Block Erase a Block of 32K word Program_One_Word Alter data in one word Program_One_Sector Alter data in 2048 word sector Program_One_Block Alter data in 32K word Block Check_Toggle_Ready End of internal program or erase detection using Toggle bit Check_Data_Polling End of internal program or erase detection using Data# polling
標(biāo)簽： manufacturer Check_SST Function CFI_Que
上傳時(shí)間： 2013-12-21
上傳用戶：徐孺
// -*- Mode: Verilog -*- // Filename : wb_master.v // Description : Wishbone Master Behavorial // Author : Winefred Washington // Created On : 2002 12 24 // Last Modified By: . // Last Modified On: . // Update Count : 0 // Status : Unknown, Use with caution! // Description Specification // General Description: 8, 16, 32-bit WISHBONE Master // Supported cycles: MASTER, READ/WRITE // MASTER, Block READ/WRITE // MASTER, RMW // Data port, size: 8, 16, 32-bit // Data port, granularity 8-bit // Data port, Max. operand size 32-bit // Data transfer ordering: little endian // Data transfer sequencing: undefined
標(biāo)簽： Description Behavorial wb_master Filename
上傳時(shí)間： 2014-07-11
上傳用戶：zhanditian
fwknop stands for "Firewall Knock Operator" and is an upcoming piece of software that will be released at the DEFCON 12 conference in July, 2004 in Las Vegas. fwknop implements network access controls (via iptables) based on a flexible port knocking mini-language, but with a twist it combines port knocking and passive operating system fingerprinting to make it possible to do things like only allow, say, Linux-2.4/2.6 systems to connect to your SSH daemon. fwknop supports shared, multi-protocol port knock sequences along with both relative and absolute timeouts, and coded port knock sequences encrypted with the Rijndael Block cipher.
標(biāo)簽： Firewall Operator software upcoming
上傳時(shí)間： 2016-12-04
上傳用戶：牛津鞋
操作說(shuō)明： 1． 雙擊RobotView.exe，打開應(yīng)用程序； 2． 菜單中Draw->Block，出現(xiàn)一個(gè)對(duì)話框，從鍵盤輸入具體值，然后在左邊藍(lán)色區(qū)域任意位置點(diǎn)擊，出現(xiàn)紅色的矩形，即設(shè)置好障礙物位置，此時(shí)右上方區(qū)域中相應(yīng)位置的值從0變?yōu)?； 3． 菜單中Draw->RobotPoint，然后在左邊藍(lán)色區(qū)域任意位置點(diǎn)擊，出現(xiàn)綠色的圓，即設(shè)置好機(jī)器人目前位置； 4． 菜單中Draw->GoalPoint，然后在左邊藍(lán)色區(qū)域任意位置點(diǎn)擊，出現(xiàn)黃色的圓，即設(shè)置好目的地位置； 5． 菜單中，Edit->Begin，會(huì)在右下方會(huì)出現(xiàn)一條從機(jī)器人目前位置到目標(biāo)點(diǎn)的無(wú)碰路徑。
標(biāo)簽： RobotView exe 操作說(shuō)明
上傳時(shí)間： 2016-12-11
上傳用戶：TF2015
實(shí)現(xiàn)IDEA加密算法與解密算法 IDEA(International Data Encryption Algorithm)是瑞士的James Massey，Xuejia Lai等人提出的加密算法，在密碼學(xué)中屬于數(shù)據(jù)塊加密算法(Block Cipher)類。IDEA使用長(zhǎng)度為128bit的密鑰，數(shù)據(jù)塊大小為64bit。從理論上講，IDEA屬于“強(qiáng)”加密算法，至今還沒(méi)有出現(xiàn)對(duì)該算法的有效攻擊算法。
標(biāo)簽： IDEA International Encryption Algorithm
上傳時(shí)間： 2014-01-09
上傳用戶：yepeng139
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